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公开(公告)号：US10263521B2
公开(公告)日：2019-04-16
申请号：US15877869
申请日：2018-01-23
申请人： Silanna Asia Pte Ltd
发明人： Trevor M. Newlin
摘要： Various methods and devices that involve control circuits for power converters are disclosed. One method comprises controlling a switch using a control signal based on a comparison signal. The switch controls a transfer of power between an input node, which receives an input, and an output node. The method comprises measuring an output of the power converter, generating an error signal based on the output, generating a periodic ramp signal with a varying period, providing the error signal to a first input terminal of a comparator, providing the ramp signal to a second input terminal of the comparator, and generating the comparison signal based on the error signal and the ramp signal using the comparator. The method comprises increasing a slope of the ramp signal in response to an increase in the input, and increasing the slope of the ramp signal in response to a decrease in the varying period.
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公开(公告)号：US20180269888A1
公开(公告)日：2018-09-20
申请号：US15837288
申请日：2017-12-11
申请人： Silanna Asia Pte Ltd
发明人： Trevor M. Newlin
CPC分类号： H03M1/1071 , H03F3/45 , H03K19/018585 , H03M11/24
摘要： A configuration circuit for obtaining a digital code includes a controller circuit that generates a plurality of multibit control words. A digitally controlled current source circuit receives a multibit control word generated by the controller circuit. The digitally controlled current source circuit generates an output current that corresponds to the multibit control word in accordance with a predetermined output curve. A test voltage node receives the output current, and a test voltage develops in response to the output current. A reference voltage node develops a reference voltage, the level of which is independent of the multibit control word. A voltage comparison circuit (i) receives the test voltage and the reference voltage, (ii) compares the two voltages to produce a comparison result and (iii) sends the comparison result to the controller circuit. The digital code is obtained by the configuration circuit using the comparison result and the multibit control word.
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公开(公告)号：US20180062521A1
公开(公告)日：2018-03-01
申请号：US15651998
申请日：2017-07-17
申请人： Silanna Asia Pte Ltd
发明人： Trevor M. Newlin
CPC分类号： H02M3/1588 , H02M1/32 , Y02B70/1466
摘要： Power converters their methods of operation are described. An example method includes regulating an output using a switching circuit that responds to a control signal. The method includes comparing a feedback voltage from the output to a reference voltage using an error amplifier to create an error voltage, and comparing the error voltage to a ramp voltage from a periodic ramp signal using a comparator to create a PWM signal. The PWM signal is used in combination with the switching circuit to regulate the output. The method includes: clamping the error voltage, using a clamping circuit, if the error voltage drops below a lowest value for the periodic ramp signal while the power converter is regulating a load; and unclamping the error voltage, using the clamping circuit, if the error voltage rises above the lowest value for the periodic ramp signal while the power converter is regulating the load.
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公开(公告)号：US09843338B1
公开(公告)日：2017-12-12
申请号：US15464322
申请日：2017-03-20
申请人： Silanna Asia Pte Ltd
发明人： Trevor M. Newlin
CPC分类号： H03M11/24 , H03K19/018585
摘要： A configuration circuit for obtaining a digital code includes a controller circuit that generates a plurality of multibit control words. A digitally controlled current source circuit receives a multibit control word generated by the controller circuit. The digitally controlled current source circuit generates an output current that corresponds to the multibit control word in accordance with a predetermined output curve. A test voltage node receives the output current, and a test voltage develops in response to the output current. A reference voltage node develops a reference voltage, the level of which is independent of the multibit control word. A voltage comparison circuit (i) receives the test voltage and the reference voltage, (ii) compares the two voltages to produce a comparison result and (iii) sends the comparison result to the controller circuit. The digital code is obtained by the configuration circuit using the comparison result and the multibit control word.
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公开(公告)号：US10128863B2
公开(公告)日：2018-11-13
申请号：US15837288
申请日：2017-12-11
申请人： Silanna Asia Pte Ltd
发明人： Trevor M. Newlin
摘要： A configuration circuit for obtaining a digital code includes a controller circuit that generates a plurality of multibit control words. A digitally controlled current source circuit receives a multibit control word generated by the controller circuit. The digitally controlled current source circuit generates an output current that corresponds to the multibit control word in accordance with a predetermined output curve. A test voltage node receives the output current, and a test voltage develops in response to the output current. A reference voltage node develops a reference voltage, the level of which is independent of the multibit control word. A voltage comparison circuit (i) receives the test voltage and the reference voltage, (ii) compares the two voltages to produce a comparison result and (iii) sends the comparison result to the controller circuit. The digital code is obtained by the configuration circuit using the comparison result and the multibit control word.
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公开(公告)号：US09966850B2
公开(公告)日：2018-05-08
申请号：US15651938
申请日：2017-07-17
申请人： Silanna Asia Pte Ltd
发明人： Trevor M. Newlin
IPC分类号： H02M1/08 , H02M1/088 , H02M1/096 , H02M3/158 , H03K17/687 , H03K19/0175
CPC分类号： H02M3/158 , H02M3/1588 , H03K17/687 , H03K19/017509 , Y02B70/1466
摘要： Various methods and devices that involve electronic circuits are disclosed. A disclosed method includes buffering an input signal using a first buffer. The first buffer is powered by a supply voltage and a reference voltage. The method also includes buffering the input signal using a second buffer. The second buffer is powered by the reference voltage and a ground voltage. The method also includes level shifting a first buffer output signal of the first buffer to a voltage range using a first level shifter, and level shifting a second buffer output signal of the second buffer to the voltage range using a second level shifter. The voltage range is larger than a delta between the supply voltage and the reference voltage. The reference voltage is greater than one quarter of the supply voltage and less than three quarters of the supply voltage.
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公开(公告)号：US09712061B1
公开(公告)日：2017-07-18
申请号：US15251936
申请日：2016-08-30
申请人： Silanna Asia Pte Ltd
发明人： Trevor M. Newlin
CPC分类号： H02M3/1588 , H02M1/32 , Y02B70/1466
摘要： Power converters their methods of operation are described. An example method includes regulating an output using a switching circuit that responds to a control signal. The method includes comparing a feedback voltage from the output to a reference voltage using an error amplifier to create an error voltage, and comparing the error voltage to a ramp voltage from a periodic ramp signal using a comparator to create a PWM signal. The PWM signal is used in combination with the switching circuit to regulate the output. The method includes: clamping the error voltage, using a clamping circuit, if the error voltage drops below a lowest value for the periodic ramp signal while the power converter is regulating a load; and unclamping the error voltage, using the clamping circuit, if the error voltage rises above the lowest value for the periodic ramp signal while the power converter is regulating the load.
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公开(公告)号：US09712058B1
公开(公告)日：2017-07-18
申请号：US15250531
申请日：2016-08-29
申请人： Silanna Asia Pte Ltd
发明人： Trevor M. Newlin
IPC分类号： H02M3/158 , H02M1/08 , H02M1/088 , H02M1/096 , H03K19/0175 , H03K17/687
CPC分类号： H02M3/158 , H02M3/1588 , H03K17/687 , H03K19/017509 , Y02B70/1466
摘要： Various methods and devices that involve electronic circuits are disclosed. A disclosed method includes buffering an input signal using a first buffer. The first buffer is powered by a supply voltage and a reference voltage. The method also includes buffering the input signal using a second buffer. The second buffer is powered by the reference voltage and a ground voltage. The method also includes level shifting a first buffer output signal of the first buffer to a voltage range using a first level shifter, and level shifting a second buffer output signal of the second buffer to the voltage range using a second level shifter. The voltage range is larger than a delta between the supply voltage and the reference voltage. The reference voltage is greater than one quarter of the supply voltage and less than three quarters of the supply voltage.
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公开(公告)号：US10707758B2
公开(公告)日：2020-07-07
申请号：US16382546
申请日：2019-04-12
申请人： Silanna Asia Pte Ltd
发明人： Trevor M. Newlin
摘要： Various methods and devices that involve control circuits for power converters are disclosed. One method comprises controlling a switch using a control signal based on a comparison signal. The switch controls a transfer of power between an input node, which receives an input, and an output node. The method comprises measuring an output of the power converter, generating an error signal based on the output, generating a periodic ramp signal with a varying period, providing the error signal to a first input terminal of a comparator, providing the ramp signal to a second input terminal of the comparator, and generating the comparison signal based on the error signal and the ramp signal using the comparator. The method comprises increasing a slope of the ramp signal in response to an increase in the input, and increasing the slope of the ramp signal in response to a decrease in the varying period.
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公开(公告)号：US20190238056A1
公开(公告)日：2019-08-01
申请号：US16382546
申请日：2019-04-12
申请人： Silanna Asia Pte Ltd
发明人： Trevor M. Newlin
摘要： Various methods and devices that involve control circuits for power converters are disclosed. One method comprises controlling a switch using a control signal based on a comparison signal. The switch controls a transfer of power between an input node, which receives an input, and an output node. The method comprises measuring an output of the power converter, generating an error signal based on the output, generating a periodic ramp signal with a varying period, providing the error signal to a first input terminal of a comparator, providing the ramp signal to a second input terminal of the comparator, and generating the comparison signal based on the error signal and the ramp signal using the comparator. The method comprises increasing a slope of the ramp signal in response to an increase in the input, and increasing the slope of the ramp signal in response to a decrease in the varying period.
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